MAIDUGURI, Nigeria (Reuters) - Two suicide bombers killed at least eight people on Saturday in the northeastern Nigerian city of Maiduguri, the heart of a seven-year-old insurgency by Islamist Boko Haram militants, the military said.

There was no immediate claim of responsibility but the attacks bore the hallmarks of Boko Haram which has been trying to set up an Islamic state in the northeast, killing thousands and displacing more than 2 million people.

In one attack a woman who blew herself up at 0600 GMT (2 a.m. ET) in front of the Bakasi camp for displaced persons on Maiduguri's outskirts, killing five men and wounding 11 women, the army said in a statement.